1474561621 has 8 divisors (see below), whose sum is σ = 1588612760. Its totient is φ = 1360599552.

The previous prime is 1474561619. The next prime is 1474561631. The reversal of 1474561621 is 1261654741.

It can be written as a sum of positive squares in 4 ways, for example, as 257249521 + 1217312100 = 16039^2 + 34890^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1474561621 - 2¹ = 1474561619 is a prime.

It is a super-2 number, since 2×1474561621² = 4348663948252295282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1474561631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14365 + ... + 56173.

It is an arithmetic number, because the mean of its divisors is an integer number (198576595).

Almost surely, 2^1474561621 is an apocalyptic number.

It is an amenable number.

1474561621 is a deficient number, since it is larger than the sum of its proper divisors (114051139).

1474561621 is a wasteful number, since it uses less digits than its factorization.

1474561621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44535.

The product of its digits is 40320, while the sum is 37.

The square root of 1474561621 is about 38400.0211067650. The cubic root of 1474561621 is about 1138.2062745174.

The spelling of 1474561621 in words is "one billion, four hundred seventy-four million, five hundred sixty-one thousand, six hundred twenty-one".